Burner for gas heaters and cookers.



No. 683,575.'A Patented ont, l, mol.

' E. w.,T. RICHMOND.

BURNER FOR GAS HEATEBS AND .CO0KER'S. (Application med me. 17', 1900.)

(No Model.)

WW. my

UNITED STATES 'PATENT OFFICE."

EDMOND W. T. RICHMOND, OF ROMFORD, ENGLAND.

BURNER vFOR GAS HEATERS AND GOOKERS.

SPECIFICATION 'forming pa'rtcf Letters Patent`1\To683,575, dated October 1, 1901. Application iiled December 1'7, 1900. Serial No. 46,7139. (No model.)

To all whom, it mrtg/concern.-

y Beit known that I, EDMOND W. T. RICH- MOND, a subject of the Queen of Great Britain, residing at Summercourt, Romford, Es- 5 sex county, England, have invented certain new and useful Improvements in Burners for Gas Heaters and'Cookers, of which the following is a specification.

The object of this invention is to provide a gas-jet of such construction as to supply the main passage or mixing-chamber of a gasburner usuall7 having multiple teats, nipples, or yorifices with air and gas Acombined in proper quantities, according to the kind of gas burned and the exigencies of the special conditions under which the burner is used. DiEerent conditions exist where coal-gas, carbureted water-gas, and natural gas are used. Regardless of the character of the gas being burned one object of the invention is to prevent a tendency to fire back.

In the accompanying drawings, Figures 1 and 2 are detailed views of a device embodying the invention. Fig. 3 illustrates a burner to which it is applied.

The invention comprises a gas-jet having a sheath, tube, or collar adjustable axially upon it toward and from the opening ofthe burner and having in it multiple apertures for the passage of air. The jet may be in the form of a hollow cylinder and preferably to insure a thorough mixing of the gas and air has multiple openings in its end for the discharge of the gas. The other member of the device may be a tube, sleeve, or collar working on a screw-thread on the exterior of the cylinder, and preferably it has a flange at its outer end, in which the multiple air apertures are formed.

The device shown in the drawings and embodyin g the invention comprises a hollow hub or body A, from which preferably extends a flange B, by which it may be screwed or bolted to any gas-burner, as X, provided with a suitable seat to receive the ange. The hollow hub is provided with a tapped opening for receiving the pipe Y, carrying the gas. From each end of the hub extends a gas-jet or hollow cylindrical part G, which has in its end 5o multiple apertures c for the discharge of gas.

The part C is threaded to receive a collar D, having a flaring flange E at its outer end of approximately the diameter of the opening F to the mixing-chamber of the gas-burner. By running the collar back or forth on the threaded cylindrical part C the proximity of the iiange to the edge of the opening of the burner may be regulated at will to regulate the amount rof air that will be admitted to vthe burner around the edges of the fiange. Apertures e in the flange permit at all times the passage of a determined quantity of air` Since the drawings show a ring-shaped burner with opposite openings for the reception of air and gas, I have shown the device as having opposite gas-jets C.

When a gas-burner working on the Bunsen principle, such as that disclosed, is in use, sudden drafts of air or abnormal conditions are apt to cause it to fire back. EX- perience has demonstrated that in a jet device of the character described the flange on the collar acts as a guard to reduce the influenceof such drafts. The flange being perforated admits to the burner a considerable .quantity of air in small streams or jets and renders unnecessary so large an opening or passage around the edge of the -Iiange for the admission of air to the burner, and the burner is therefore less susceptible to the influence of drafts and less liable to fire back.

Vater-gas carbureted for illumination is denser and more sluggish than coal-gas, and for a given quantity of such gas less airis required than Where coal-gas is used. With a burner such as described an adjustment for all conditions is ador-ded and the air and gas are so broken up that an effective mixing of them is assured.

In the burner shown, comprising the gasjct adapted to entrain air into the mixingchamber, the gas-jet is located at, but preferably somewhat wilhout, the entrance to the mixing-chamber, and the surrounding sleeve with multiple air-apertures is adjustable toward and from said entrance. The lnultiple airapertures preferably, as shown, are formed in a flange inclining forward in advance of the gas-jet, and the axes of the air-apertures incline toward the axis of the gas-jet. This structure has the advantage hereinbefore stated. i

I claim as my invention- 1. In a gas-burner, the combination of a mixing-chamber, a gas-j etA arranged to entrain air into said chamber and having multiple apertures for discharge of gas, and an axiallyadjnstable sleeve surrounding the gas-jet, movable toward and from the entrance to the mixing-chamber, and having multiple. air-apertures, whereby a thorough mixture of the air and gas may be had and the supply of air entering the mixing chamber around the sleeve regulated.

2. In a gas-burner, the combination of a mixing-chamber,a gasjet arranged to entrain airinto said chamber, and having multiple apertures for discharge of gas, and an axiallyadjustable sleeve surrounding the gas-jet, movable toward and from the mixing-charnber and having multiple air-apertures whose axes incline toward the axis of the gas-jet, whereby the jets of air converge upon the inlowing gas and insure a thorough mixture, and the supply of air entering the chamber around the sleeve is regulated.

8. In a gas-burner, the combination of a mixing-chamber, a gas-jet to entrain air into.

said chamber having multiple gas-apertures and arranged opposite the entrance tothe chamber, and an axially-adjustable sleeve surrounding the gas-jet,extending in advance of it, having multiple air-apertures therein and adjustable toward and from the entrance to the mixing-chamber. A

4. A device for supplying gas and air to the mixing-chamber of a'gasburner, comprising a'gas-jet adapted to be applied at the entrance of the mixing-chamber, and the flangesleeve with multiple air-apertures extending in advance of the jet, and axially adjustable thereon so as to be moved toward and from the entrance to the mixing-chamber.

In testimonywhereot I have hereunto subscribed my name.

EDMOND W. T. RICHMOND.

W itnesses KATHARINE -lVlAcMAHorg` EDWARD C. DAVIDSON. 

